.map_wrap {
  position: relative;
}

.map_link .btn_01,
.map_link .btn_02,
.map_link .btn_03,
.map_link .btn_04 {
  position: absolute;
  margin-top: 0;
}

.btn_01 {
  top: 28.2%;
  left: 10.8%;
}

.btn_02 {
  top: 41.1%;
  left: 45.5%;
  z-index: 1;
}

.btn_03 {
  top: 35.2%;
  left: 53.6%;
}

.btn_04 {
  top: 33.7%;
  left: 72%;
}